Note 5 - Loans Acquired (Detail) - Adjustments to Company's Financial Results (Covered by FDIC Loss Share Agreements [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Covered by FDIC Loss Share Agreements [Member]
Impact on net interest income	$ 2,915	$ 9,104
Non-interest income	(2,729)	(8,245)
Net impact to pre-tax income	186	859
Net impact, net of taxes	$ 113	$ 522